@top-height: 60px;
@left-width: 20vw;
@box-shadow-color: rgba(0, 0, 0, .1);
@border-color: rgba(0, 0, 0, .1);
@avatar-size: 40px;
@color: #409eff;
@gray-color: rgba(0, 0, 0, .5);
@main-padding: 20px;
@gap: 20px;
@small-size: 14px;
@main-height: calc(100vh - @top-height - @main-padding);
@small-main-height: calc(100vh - @gap * 4 - @top-height - 56px);
@min-main-width: 997px;
@botton-size: 40px;